87droptop

Good afternoon,

Looking for a home for one of my vacuum lines.This hose come from the fender. Its just free and i think if i find the home for it probably will solve all my problems. The hose is on the driver side and has a strong sucking. If i plug the line the car idles good but after you drive it for a while is starts to cut of when i come to a stop or press the clutch. ANYone have any idea.


87 drop top
longtube headers
msd
E303 cam
SR intake
70 mm throttlebody
Gt 40 heads
3 row alminum radiator

mjr46

can you post a pic????

Boss_Hotrod

Hard to say being from the driver's side since that is where most of the vac lines are but if its coming out from the inner fender it might be for the cruise control servo. Mine had a rib running the length of the hose if I remember correctly.

87droptop

Heres a picture of the hoes

87droptop

https://mustangforums.com/forum/memb...tery-hose.html

Boss_Hotrod

Looks like the hose for the windshield washer tank. See if you can follow it up to the cowl grille since it looks like the tank is gone. Tank neck should have stuck out of large hole in fender apron.

87droptop

Im not sure if it could be for the washer fluid because if i cover the hose with my figure it makes the car idle correctly but if i plug it too long the car wont stay crunk.

dawson1112

That actually does look like the wiper fluid hose.

If that hose is pulling vacuum for sure, then its possible that at some point someone mistakenly hooked it up to a vacuum port. Since the tank is missing I assume its disconnected at both ends.

You will just have to follow it back and see where its getting vacuum from.
If plugging it causes the car to idle good for a few seconds then it dies, that could be due to a faulty IAC , and the only thing keeping it running is the vacuum leak from that hose.... this will cause poor idle and or drivability issues.

For the time being check for codes stored ,, plug that line,, clean the IAC valve, and throttle body. Then perform a base idle reset procedure ,,

Clear the computer's idle memory by disconnecting the battery for 20+ minutes.

-Disconnect the IAC
-Reconnect battery
-Start engine and set idle speed to desired RPM with idle screw on throttle body
-Turn off engine and reconnect the IAC
-Set TPS voltage between 0.90 - 0.98 volts (IIRC) with a digital volt meter
-Start engine and let it idle for 2 minutes with no accessories on.
-Turn off engine for two minutes
-Start engine again and run for 2 minutes with every accessory turned on.
-Turn engine off again.

If this doesn't fix your idle problems , then it may be time for a new IAC.